Any line (not only wall) or point could have ID. The line points are numbered from 0 to end. Any point of line could have the ID. 

So you may join Jane with Henry, etc...

m.


Aug 18, 2013 v 8:48 PM, Graham Mullan <graham.mullan@coly.org.uk>:

Thanks to a way that a survey was carried out, I have a junction between
a scarp in one survey and two scraps in another. No matter which way i
try to sort the joins, nonsense results. Is there a more specific way of
joining lines that just specifying scraps?